How to remove Mac OS Update Installer

I attempted to apply the Sequoia 15.2 update to my OCLP Mac 6,1 which is currently running OS 15.1.1 without issue.

Unfortunately, the OS Update Boot volume which shows in the Boot picker screen doesn't work and I get the dreaded "contact Apple Support" message. The Boot drive is still available and I can choose that and the machine boots into 15.1.1 just fine.

Does anyone know how to remove the OS Update Install Volume that shows up in the Boot Picker? It is the default so if I don't catch it it fails at startup and I need to do the escape tricjk to manually choose the Boot drive.

submitted by /u/HabeTech2023
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